(19)
(11) EP 2 304 282 A1

(12)

(43) Date of publication:
06.04.2011 Bulletin 2011/14

(21) Application number: 09790860.2

(22) Date of filing: 28.07.2009
(51) International Patent Classification (IPC): 
F16J 15/43(2006.01)
(86) International application number:
PCT/US2009/051888
(87) International publication number:
WO 2010/014563 (04.02.2010 Gazette 2010/05)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated Extension States:
AL BA RS

(30) Priority: 30.07.2008 US 84779 P

(71) Applicant: Rigaku Innovative Technologies Inc.
Auburn Hills, MI 48326 (US)

(72) Inventor:
  • HELGELAND, Walter
    Charlton, MA 01507 (US)

(74) Representative: Solf, Alexander 
Patentanwälte Dr. Solf & Zapf Candidplatz 15
81543 München
81543 München (DE)

   


(54) MAGNETIC FLUID SEAL WITH SHUNT ELEMENT